Base64 encoding

[baxmittens]

I just came across your software package and tried it for my vtk/vtu data. It did not work. It may be because the AppendedData is base64 encoded.
You do support raw data, but no base64? Shouldn't that be easy to implement?

I have my own implementation VTUFileHandler.jl which is streamlined for stochastic postprocessing and does not do much more than reading existing VTU-files, manipulating them, and writing them to disc again.
But it does handle base64 (but no raw data).

If that is of any help to you, feel free to copy my code as you wish

Here is my header definition

struct VTUHeader{T<:Union{UInt32,UInt64}}

and here is how I read base64 encoded appended data:

https://github.com/baxmittens/VTUFileHandler.jl/blob/45905e7120dad2835f58ecb855f88ad691640ed6/src/VTUFileHandler/io.jl#L30

Greetz max

[sloede]

Thanks for letting us know - it's great to see that there are others in Julia working with VTU data.

I think support for base64 is not too difficult to implement in ReadVTK.jl. From our side, nobody is actively working on this, but we'd be happy to assist with a PR created by you or someone else interested in this feature.

[baxmittens]

At the moment, I work with XDMF whenever I can because I think it is faster and way easier. So this is of no high priority for me. But ultimately, it would be nice if I could switch from my to your implementation, getting rid of one package to maintain myself.

I dont think raw encoding should be used in VTK at all since it does not comply with XML standards and if one want smaller file sizes, XDMF should be used...

That being said, if I have some spare time, I will look into it and do a PR. Perhaps towards the end of this year.